What do & and | mean in C language?

The & (bitwise AND) and | (bitwise OR) operators in C language operate on integer binary bits bit by bit: the result of the & operation is 1 if and only if both bits are 1; | The result of the operation is 1 if and only if at least one bit is 1.

& and | operators in C language

& (bitwise AND)## The

#& operator ANDs the binary bits of two given integers bit by bit, and the result is 1 if and only if both corresponding bits are 1.

Syntax:

result = x & y;

Example:

int x = 6; // 0b110
int y = 5; // 0b101
int result = x & y; // 0b100 (4)

| (Bitwise OR)

|Operator ORs the binary bits of two given integers bit by bit, and the result is 1 if and only if at least one corresponding bit is 1.

Grammar:

result = x | y;

Example:

int x = 6; // 0b110
int y = 5; // 0b101
int result = x | y; // 0b111 (7)

Notes:

& and | operators only apply to integer types. The
• operator has a higher priority than arithmetic operators.
• Bitwise operators are usually used for bit operations and masks, for example:
  Check whether a certain bit is 1:
  • if ((x & ( 1 << n)) != 0)
  Clear a certain bit:
  • x &= ~(1 << n)
  Set a certain bit:
  • x |= (1 << n)

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